Skip to content

Instantly share code, notes, and snippets.

Sun Lei jerry-sl

Block or report user

Report or block jerry-sl

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
View Stop process shell
while true; do
pid=`ps -ef |grep binary_name |grep -v grep |awk '{print $2}'`
if [ -n "$pid" ]; then
kill -15 $pid
echo "The process is exiting, it may take some time, forcing the exit may cause damage to the database, please wait patiently..."
sleep 1
echo "binary_name process killed successfully!"
jerry-sl / System
Created Mar 5, 2019 — forked from vasanthk/System
System Design Cheatsheet
View System

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
View cmd proxy
alias proxy="export ALL_PROXY=socks5://"
alias unproxy="unset ALL_PROXY"
alias ip="curl -i"
View git proxy
git config --global http.proxy 'socks5://'
git config --global https.proxy 'socks5://'
View docker command
// 删除所有已经停止的container
docker rm -v $(docker ps -aq -f status=exited)
// 从dockerhub下拉镜像
docker pull redis
// 后台启动容器
docker run --name myredis -d redis
// 启动另外一个容器并链接到myredis:redis容器
docker run --rm -it --link myredis:redis redis /bin/bash
jerry-sl / .bashrc
Created Jun 23, 2018 — forked from vsouza/.bashrc
Golang setup in Mac OSX with HomeBrew. Set `GOPATH` and `GOROOT` variables in zshell, fish or bash.
View .bashrc
# Set variables in .bashrc file
# don't forget to change your path correctly!
export GOPATH=$HOME/golang
export GOROOT=/usr/local/opt/go/libexec
export PATH=$PATH:$GOPATH/bin
export PATH=$PATH:$GOROOT/bin
jerry-sl / gox.text
Created Jun 18, 2018 — forked from achun/gox.text
go get
View gox.text
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
go get -u
View gist:18089aacea9bf24ba8db2b75c7273508
var fs = require('fs');
var parse = require('csv-parse');
var Web3 = require('web3');
var abi = require('./abi.json');
var _ = require('lodash');
const Tx = require('ethereumjs-tx');
var web3 = new Web3(new Web3.providers.HttpProvider(""));
//var inputFile = 'data.csv';
jerry-sl /
Created Jun 3, 2018 — forked from joepie91/
Secure random values (in Node.js)

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

  • Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
  • Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
  • If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
  • If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

jerry-sl / re
Last active Sep 9, 2017
Regular Expression
View re
• The ? matches zero or one of the preceding group.
• The * matches zero or more of the preceding group.
• The + matches one or more of the preceding group.
• The {n} matches exactly n of the preceding group.
• The {n,} matches n or more of the preceding group.
• The {,m} matches 0 to m of the preceding group.
• The {n,m} matches at least n and at most m of the preceding group.
• {n,m}? or *? or +? performs a nongreedy match of the preceding group.
• ^spam means the string must begin with spam.
You can’t perform that action at this time.